CN102811896A - Steering device - Google Patents

Steering device Download PDF

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Publication number
CN102811896A
CN102811896A CN2012800002167A CN201280000216A CN102811896A CN 102811896 A CN102811896 A CN 102811896A CN 2012800002167 A CN2012800002167 A CN 2012800002167A CN 201280000216 A CN201280000216 A CN 201280000216A CN 102811896 A CN102811896 A CN 102811896A
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CN
China
Prior art keywords
car body
separator
directing pin
bracket
guiding groove
Prior art date
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Granted
Application number
CN2012800002167A
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Chinese (zh)
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CN102811896B (en
Inventor
石井徹
田中嵩悠
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NSK Ltd
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NSK Ltd
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Publication date
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Publication of CN102811896A publication Critical patent/CN102811896A/en
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Publication of CN102811896B publication Critical patent/CN102811896B/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D1/00—Steering controls, i.e. means for initiating a change of direction of the vehicle
    • B62D1/02—Steering controls, i.e. means for initiating a change of direction of the vehicle vehicle-mounted
    • B62D1/16—Steering columns
    • B62D1/18—Steering columns yieldable or adjustable, e.g. tiltable
    • B62D1/19—Steering columns yieldable or adjustable, e.g. tiltable incorporating energy-absorbing arrangements, e.g. by being yieldable or collapsible
    • B62D1/195—Yieldable supports for the steering column
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/09—Control elements or operating handles movable from an operative to an out-of-the way position, e.g. pedals, switch knobs, window cranks

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Steering Controls (AREA)
  • Power Steering Mechanism (AREA)

Abstract

A steering device is provided with: a column (46); a column (42) which fits into column (46) in a collapsible manner; a bracket (21) which can be attached to a vehicle body so as to be able to be detached, together with column (42), by the force of impact at the time of second impact; a guide bracket (61) which is secured to column (46) and on which a guide groove (63) is formed; and a pin (71) which is secured to the bracket (21) and movable with the bracket (21) as guided by the guide groove (63). The guide bracket (61) comprises a plate part (61d) not in contact with the bracket (21), the guide groove (63) being formed on the plate part (61d). A head part (713) having a larger diameter than a shaft part is provided on the upper end of the pin (71). A gap setting part is provided which abuts the upper face of the bracket (21) when the pin (71) is secured to the bracket (21), and sets the length of the gap between the lower face of the head part (713) and the upper face of the bracket (21) to a predetermined value. Thus provided is a steering device such that the detach force of column (42) upon detachment thereof to the forward side of the vehicle due to the force of impact of second impact can be precisely adjusted, and adjusting of the detach force is simple.

Description

Steering hardware
Technical field
This embodiment relates to steering hardware, and particularly steering handwheel moves and the steering hardware of absorption impact load to car body front side damage (collapse) when secondary collision.
Background technology
Damage to the car body front side as steering handwheel when the secondary collision and to move and absorb the steering hardware of impact load, have the spy to open the steering hardware shown in the 2005-219641 communique.The spy opens the steering hardware shown in the 2005-219641 communique; Through the car body installation bracket top Steering gear and bottom Steering gear are installed on car body; And the predetermined impulsive force during through secondary collision makes the top Steering gear damage from the disengaging of car body installation bracket and to the car body front side and moves.
The prior art document
Patent documentation
Patent documentation 1: the spy opens the 2005-219641 communique
Summary of the invention
Invent problem to be solved
Open in the steering hardware shown in the 2005-219641 communique the spy; Tilt bracket via the little plated film plate fastening top Steering gear on the car body installation bracket of friction coefficient; Predetermined impulsive force during through secondary collision successfully breaks away from top Steering gear and tilt bracket from the car body installation bracket.But, because be, so according to the fastening torque of bolt, the breakaway force of top Steering gear and tilt bracket changes through bolt fixing plated film plate on the car body installation bracket.Therefore, need the fastening torque of bolt be adjusted into predetermined value, have following problems: built-up time is elongated, and the assembling of plated film plate requires skilled.
The scheme that is used to deal with problems
The object of the present invention is to provide the breakaway force of impulsive force when the car body front side breaks away from and the easy steering hardware of adjustment operation of breakaway force in the time of to adjust the top Steering gear because of secondary collision accurately.
Above-mentioned purpose solves through following technical scheme.That is, the present invention provides a kind of steering hardware, and this steering hardware possesses: the bottom Steering gear, and its car body front side can be fixed in car body; The top Steering gear, it can be damaged to the car body front side and be embedded in said bottom Steering gear movably, and the steering shaft axle bearing that steering handwheel will be installed gets and can rotate; Upper bracket, it can be installed on car body with the mode that can break away from, and the mode of said disengaging is that the predetermined impulsive force in the time of can passing through secondary collision breaks away to the car body front side with said top Steering gear; Guide bracket, it is fixed in said bottom Steering gear with the car body front side, and Steering gear extends to the car body rear side along said bottom, is formed with when secondary collision the guiding groove of channeling conduct is moved in the damage of said top Steering gear; And directing pin, it is fixed in said upper bracket, by said guiding groove the outer peripheral face channeling conduct of axial region can be moved with upper bracket; It is characterized in that: said guide bracket has and the discontiguous flat part of said upper bracket, is formed with said guiding groove at this flat part; Said directing pin has the diameter head bigger than this axial region in the upper end of the axial region of this directing pin; This steering hardware possesses the configuration part, gap; This configuration part, gap contacts with the upper surface of said upper bracket and the length setting in the gap between the upper surface of the lower surface of said head and upper bracket is predetermined value when said directing pin being fixed in said upper bracket.
According to preferred mode of the present invention; A kind of steering hardware is provided; It is characterized in that: possess plastic separator, this separator is embedded in the axial region outer peripheral face of said directing pin outward, and the outer peripheral face of this separator contacts with said guiding groove and can damage mobile; At the outer peripheral face of said separator, be formed with and contact with said guiding groove and can damage mobile cylindrical portion.
According to preferred mode of the present invention, a kind of steering hardware is provided, it is characterized in that:, be formed with and contact with said guiding groove and can damage 2 planar portions that move and be parallel to each other at the outer peripheral face of said separator.
According to preferred mode of the present invention, a kind of steering hardware is provided, it is characterized in that: possess upper end, the diameter flange part bigger that is formed at said separator than the outer peripheral face of separator.
According to preferred mode of the present invention, a kind of steering hardware is provided, it is characterized in that: the flange part of said separator forms discoid.
According to preferred mode of the present invention, a kind of steering hardware is provided, it is characterized in that: the flange part of said separator forms rectangular shape.
According to preferred mode of the present invention, a kind of steering hardware is provided, it is characterized in that: possess protuberance, this protuberance is formed at the upper surface of said flange part highlightedly to the car body upper side, is pushed by the lower surface of said head and can plastic deformation.
According to preferred mode of the present invention, a kind of steering hardware is provided, it is characterized in that: the area of section of cutting off out with the central axis plane orthogonal of said separator of using of the said protuberance of said flange part diminishes to the car body upper side.
According to preferred mode of the present invention, a kind of steering hardware is provided, it is characterized in that: the groove width of the car body front side of said guiding groove forms widelyer than the groove width of square end behind the car body.
According to preferred mode of the present invention, a kind of steering hardware is provided, it is characterized in that:, the periphery of the said guiding groove of said guide bracket is erected through flanging processing.
According to preferred mode of the present invention, a kind of steering hardware is provided, it is characterized in that: configuration part, said gap is the step surface that is integrally formed at the axial region of said directing pin; Said directing pin along the lower surface of the said head of central axis and the interval of said step surface, bigger than the length along central axis of said separator.
According to preferred mode of the present invention, a kind of steering hardware is provided, it is characterized in that: configuration part, said gap is the axle sleeve of hollow cylindrical, and this axle sleeve is embedded in the axial region outer peripheral face of said directing pin outward, and said separator is embedded in the outer peripheral face of this axle sleeve outward; The length along central axis of said axle sleeve is bigger than the length along central axis of said separator.
Steering hardware of the present invention possesses: guiding groove, and it is formed at guide bracket abreast with the damage moving direction; Directing pin, it is fixed in upper bracket, can move the damage mobile terminal up to the car body front side by guiding groove with upper bracket to the outer peripheral face channeling conduct of axial region; Head, it is formed at the upper end of axial region with the diameter mode bigger than the axial region of directing pin, with the upper surface butt of the guide bracket gap with respect to the direction of damaging the moving direction quadrature with the restriction upper bracket; With the configuration part, gap, it is when being fixed in upper bracket with directing pin, and the upper surface butt of upper bracket and the length setting in the gap between the upper surface of the lower surface of head and upper bracket is predetermined value.
Therefore, through the configuration part, gap, can limit upper bracket with respect to guide bracket, with respect to the gap of the direction of damaging the moving direction quadrature, reduce load that upper bracket breaks away from from guide bracket and this load be set at necessarily.
In addition, possess: plastic separator, this separator are embedded in the axial region outer peripheral face of directing pin outward, and the outer peripheral face of this separator contacts with guiding groove and can damage mobile; Flange part, this flange part is formed at the upper end of separator, and diameter is bigger than the outer peripheral face of separator; And protuberance, this protuberance is formed at the upper surface of flange part highlightedly to the car body upper side, is pushed by the lower surface of head and can plastic deformation.
Therefore; Only through directing pin is fixed in upper bracket; The lower surface of the head of directing pin is pushed protuberance and is made its plastic deformation, bursts and decrease, and has limited the gap with respect to the upper bracket on the direction of damaging the moving direction quadrature, so do not need the adjustment operation in gap; Assembling does not need skilled, has shortened built-up time.
In addition, separator is formed by synthetic resin, so can reduce the friction coefficient between guiding groove and the directing pin.Therefore, the absorptive character of the impact energy during secondary collision are stable, can set the absorption characteristic of impact load accurately.
Description of drawings
Fig. 1 is the single-piece block diagram that the steering hardware of the 1st embodiment of the present invention or the 2nd embodiment is adopted in expression.
Fig. 2 is the block diagram of wanting portion of the steering hardware of expression the 1st embodiment of the present invention, is the block diagram of observing from the upper right quarter of car body rear side.
Fig. 3 is that Fig. 2 is the birds-eye view of the car body rear side periphery of guide bracket.
Fig. 4 A is the 4A-4A cutaway view of Fig. 3 of the contact part of expression resinous separator and guiding groove, and Fig. 4 B is the front view of the directing pin monomer of presentation graphs 4A.
Fig. 5 is the block diagram of the resinous separator in expression the 1st embodiment of the present invention.
Fig. 6 is the block diagram of resinous separator in the variation 1 of expression the 1st embodiment of the present invention.
Fig. 7 is the block diagram of resinous separator in the variation 2 of expression the 1st embodiment of the present invention.
Fig. 8 A and Fig. 8 B are the block diagrams of resinous separator in the variation 3 of expression the 1st embodiment of the present invention, and Fig. 8 A is the block diagram of observing from the upper surface side of flange part, and Fig. 8 B is the block diagram of observing from the lower side of Fig. 8 A.
Fig. 9 A and Fig. 9 B are the block diagrams of resinous separator in the variation 4 of expression the 1st embodiment of the present invention, and Fig. 9 A is the block diagram of observing from the upper surface side of flange part, and Fig. 9 B is the block diagram of observing from the lower side of Fig. 9 A.
Figure 10 be resinous separator and guiding groove in the variation 5 of expression the 1st embodiment of the present invention contact part with the cooresponding figure of Fig. 4.
Figure 11 A be resinous separator and guiding groove in the variation 6 of expression the 1st embodiment of the present invention contact part with the cooresponding figure of Fig. 4, Figure 11 B is the front view of the directing pin monomer of presentation graphs 11A.
Figure 12 A be resinous separator and guiding groove in the variation 7 of expression the 1st embodiment of the present invention contact part with the cooresponding figure of Fig. 4, Figure 12 B is the front view of the directing pin monomer of presentation graphs 12A.
Figure 13 A be resinous separator and guiding groove in the variation 8 of expression the 1st embodiment of the present invention contact part with the cooresponding figure of Fig. 4; Figure 13 B is the front elevation of the directing pin monomer of presentation graphs 13A, and Figure 13 C is the cutaway view of the axle sleeve monomer of presentation graphs 13A.
Figure 14 is the block diagram of wanting portion of the steering hardware of expression the 2nd embodiment of the present invention, is the block diagram of observing from the upper right quarter of car body rear side.
Figure 15 is the peripheral birds-eye view of car body rear side of the guide bracket of Figure 14.
Figure 16 is near the amplification plan view the square end behind the car body of guiding groove of guide bracket of Figure 15.
Figure 17 is the 17A-17A cutaway view of Figure 15 of the contact part of expression directing pin and guiding groove
Figure 18 be the expression the 2nd embodiment of the present invention variation 1 in guiding groove with the cooresponding figure of Figure 16.
Figure 19 be the expression the 2nd embodiment of the present invention variation 2 in guiding groove with the cooresponding figure of Figure 16.
Figure 20 be the expression the 2nd embodiment of the present invention variation 3 in guiding groove with the cooresponding figure of Figure 16.
Figure 21 be the expression the 2nd embodiment of the present invention variation 4 in guiding groove with the cooresponding figure of Figure 16.
Figure 22 be directing pin and guiding groove in the variation 5 of expression the 2nd embodiment of the present invention contact part with the cooresponding figure of Figure 17.
Figure 23 be directing pin and guiding groove in the variation 6 of expression the 2nd embodiment of the present invention contact part with the cooresponding figure of Figure 17.
The specific embodiment
Below, based on accompanying drawing the 1st embodiment of the present invention and variation 1～8 thereof are described.
< the 1st embodiment >
Fig. 1 is the single-piece block diagram that the steering hardware of the 1st embodiment of the present invention or the 2nd embodiment is adopted in expression.As shown in Figure 1, the steering hardware of the 1st embodiment of the present invention and the 2nd embodiment is the power steering gear of Steering gear auxiliary type.Steering gear auxiliary type pinion and-rack power steering gear shown in Figure 1 is the power steering gear of following manner: in order to alleviate the manual manipulation power to steering handwheel 101; Give output shaft 107 with the auxiliary force that turns to of the electronic auxiliary mechanism 102 that is installed on steering column assembly 105; Via tween drive shaft 106; The tooth bar of the steering gear assembly 103 of pinion and-rack is moved back and forth, handle steering handwheel via intermediate rod 104.
Fig. 2 is the block diagram of wanting portion of the steering hardware of expression the 1st embodiment of the present invention, is the block diagram of observing from the upper right quarter of car body rear side.Fig. 3 is that Fig. 2 is the birds-eye view of the car body rear side periphery of guide bracket.Fig. 4 A is the 4A-4A cutaway view of Fig. 3 of the contact part of expression resinous separator and guiding groove, and Fig. 4 B is the front view of the directing pin monomer of presentation graphs 4A.Fig. 5 is the block diagram of the resinous separator in expression the 1st embodiment of the present invention.
To shown in Figure 5, steering column assembly 105 is made up of the bottom Steering gear 46 as inner steering column as the car body front side of the top Steering gear 42 of outer Steering gear and top Steering gear 42 like Fig. 2.At the car body rear side the not shown steering shaft of steering handwheel shown in Figure 1 101 is installed, gets and to rotate by top cylindraceous Steering gear 42 axle bearings.Top Steering gear 42 can adjustment be tilted with elongated slot 121,121 guiding by tilt adjustments, and this tilt adjustments is formed at side plate 21b, 21b as the upper bracket 21 of top car body installation bracket with elongated slot 121,121.
The car body front side part as the right side of Fig. 2 of Steering gear 42 is embedded with to telescopic moving bottom Steering gear 46 in the axial direction on top, and the car body front side of Steering gear 46 in the bottom is equipped with the gear case 47 of electronic auxiliary mechanism 102.Above the car body of this gear case 47, the lower tray 44 as bottom car body installation bracket that is fixed in not shown car body is installed, it can be that centring adjustment tilts with inclination center shaft 45 that this lower tray 44 is got by axle bearing.
In addition, the upper surface of Steering gear 42 is formed with the groove 421 of the inner peripheral surface that runs through top Steering gear 42 on top.And then top Steering gear 42 possesses integratedly and has formed the member of flexible adjustment with elongated slot 422,422, and said flexible adjustment is extended with the central axis that elongated slot 422 forms long axis direction and top Steering gear 42 abreast.
Tilt adjustments with elongated slot 121,121 and flexible adjustment with elongated slot 422,422 in, the slotting anchorage bar 51 that is connected with.In the end of this anchorage bar 51, control lever 52 is installed, not shown movable cam and stationary cam through by these control lever 52 operations constitute the cam lock structure.
Through the swinging operation of control lever 52, by the side of the fastening top of side plate 21b, the 21b Steering gear 42 of upper bracket 21.Through this fastening/fastening releasing operation, by upper bracket 21 top Steering gear 42 is clamped/unclamps, when unclamping, carry out the adjustment of the obliquity of top Steering gear 42.In addition, through this fastening/fastening releasing operation, the reduced of top Steering gear 42, the inner peripheral surface of top Steering gear 42 clamps/unclamps the outer peripheral face of bottom Steering gear 46, when unclamping, carries out the adjustment of the telescopic location of top Steering gear 42.
From gear case 47 to the output shaft 107 of the outstanding Fig. 1 of car body front side via tween drive shaft 106, be linked to steering gear assembly 103 with the rack shaft gears in mesh, the rotary manipulation of steering handwheel 101 is delivered to steering hardware.
Upper bracket 21 is fixed in not shown car body with the mode that can break away from when the secondary collision.Upper bracket 21 is as shown in Figure 4 to be made up of following member: above-mentioned side plate 21b, 21b; Above car body, these side plates being linked is the upper plate 21c of one; With the upper surface that is fixedly set in upper plate 21c, at the upwardly extending flange part 21a of right and left, 21a.The mounting structure of car body and upper bracket 21 is as shown in Figure 3 to be made up of following member: two groovings of pair of right and left 23,23, and it is formed at flange part 21a, 21a; And box part (capsula) 24,24, it embeds the left and right sides edge part of grooving 23,23.The central axis that grooving 23,23 has with respect to top Steering gear 42 is a symmetrical structure on the overall width direction at the above-below direction of Fig. 3.In addition, box part 24,24 is from the car body above-below direction clamped flanges 21a of portion, 21a.
Upper bracket 21 and top Steering gear 42 are made up of conductive materials such as metals, and grooving 23,23 is to the car body rear side opening of flange part 21a.The above-below direction of Fig. 3 of grooving 23,23 is that the groove width of overall width direction forms from the car body front side and broadens gradually to the car body rear side, and when secondary collision, upper bracket 21 breaks away from from box part 24,24 easily.
The box part 24,24 that is embedded in grooving 23,23 is made up of the conductive materials such as metal as light alloy such as aluminium, zinc alloy diecasting.Box part 24,24 combines with flange part 21a through 4 break pin 24a respectively.In addition, box part 24,24 is fixed in car body through inserting to lead in the not shown bolt of the bolt hole 24b that is formed at box part 24.
If the impact during because of secondary collision makes the driver collide steering handwheel 101; Apply strong wallop to the car body front side; Then break pin 24a cuts off, and the flange part 21a of upper bracket 21 breaks away from from box part 24, is that the damage of car body front side is moved to the right side of Fig. 2, Fig. 3.So Steering gear 46 damage to move to the car body front side top Steering gear 42 along the bottom, energy-absorbing member is damaged and impact energy during absorbing impact.In addition, will when secondary collision, top Steering gear 42, upper bracket 21 etc. energy-absorbing member be damaged situation about moving on one side on one side, and be called in this manual to damage and move.Energy-absorbing member and the present invention do not have direct relation, so detailed explanation is omitted.
As shown in Figure 2, on lower tray 44, be fixed with the installation portion 61a of the car body forward end that is formed at guide bracket 61 through bolt 62.Guide bracket 61 is shaped the sheet metal bending.Installation portion 61a is formed at the car body above-below direction along lower tray 44, is formed with the guide portion 61b that is bent into the L font to the car body rear side in the end of the car body lower side of installation portion 61a.At the connecting portion of installation portion 61a and guide portion 61b, be formed with the leg-of-mutton rib 61c, the 61c that link installation portion 61a and guide portion 61b, to improve the rigidity of guide bracket 61.
Guide portion 61b disposes to such an extent that lean on the car body upper side slightly than the flange part 21a of upper bracket 21; Steering gear 46 extends to the car body rear side with this bottom Steering gear 46 abreast along the bottom from installation portion 61a, has near the length the square end behind the car body that arrives flange part 21a.Shown in Fig. 2 and Fig. 4 A,, be provided with the flat part 61d that forms the plane to car body upper side protuberance at the middle position of the overall width direction of guide portion 61b.Flat part 61d extends to the car body rear side from the end of the car body lower side of car body front side installation portion 61a, between the flange part 21a of this flat part 61d and upper bracket 21, is formed with predetermined gap.At the middle position of the overall width direction of flat part 61d, be formed with the guiding groove 63 that is used for the damage of upper bracket 21 is moved channeling conduct abreast with the central axis of bottom Steering gear 46.
Suppose if under the state very close to each other between flat part 61d and the flange part 21a with after the directing pin 71 stated be installed on upper bracket 21; If then the thickness of slab of guide bracket 61 and/or upper bracket 21 has scale error, then can not channeling conduct pin 71 suitable fastening.Therefore in the 1st embodiment, through between flat part 61d and flange part 21a, the gap being set, even have scale error in guide bracket 61 grades, also can be with error concealment, channeling conduct pin 71 suitable fastening.In addition; Through between flat part 61d and flange part 21a, the gap being set; Can reduce the area of contact of guide bracket 61 and upper bracket 21; And can near directing pin 71, guide bracket 61 not contacted the position with upper bracket 21, so can reduce the friction drag of guide bracket 61 and upper bracket 21.
The central axis that guiding groove 63 forms with respect to bottom Steering gear 46 extends abreast.In addition, shown in Fig. 4 A,, be formed with negative thread 22 at the middle position of overall width direction at the flange part 21a of upper bracket 21.Insert the directing pin 71 of Fig. 4 B from the car body upper side through guiding groove 63, the external screw thread 711 of directing pin 71 lower ends is screwed into negative thread 22 and directing pin 71 is fixed in flange part 21a.
Directing pin 71 forms as one following member and constitutes: external screw thread 711; Columned axial region 712, it is formed at the top of external screw thread 711, and diameter is bigger than external screw thread 711; With discoid head 713, it is formed at the top of axial region 712, and diameter is bigger than axial region 712.The head 713 of directing pin 71 is pushed guide bracket 61 from the top, restriction is with respect to the gap of the upper bracket 21 on the direction of damaging the moving direction quadrature.Directing pin 71 is that iron etc. is metal.At the outer peripheral face of axial region 712, be embedded with the separator 72 of plastic hollow cylindrical outward.The polyformaldehyde moulding of being abbreviated as POM that separator 72 is little by friction coefficient, engineering properties is excellent.At separator 72, be formed with cylindrical portion 721 in the car body lower side, be formed with the diameter discoid flange part 722 bigger than cylindrical portion 721 in the upper end of cylindrical portion 721.
When the external screw thread 711 with directing pin 71 was screwed into negative thread 22, the step surface 714 of the car body lower side of axial region 712 was connected to the upper surface 211a of flange part 21a and stops.Its result, the lower surface 715 of the head 713 of directing pin 71 is pushed the upper surface 723 of the flange part 722 of separator 72.Therefore, if the lower surface 715 of the head 713 of directing pin 71 and the length L between the step surface 714 are fabricated to predetermined length, just then the length in the gap between lower surface 715 and the upper surface 211a is determined.The step surface 714 that is integrally formed at axial region 712 constitutes the configuration part, gap in the 1st embodiment of the present invention, with the lower surface 715 of head 713 and the value of length setting for being scheduled in the gap between the upper surface 211a.
In addition, above-mentioned length L is set to bigger than the length along central axis of separator 72.At length say; Length L; Based on the thickness of the flange part 722 of the thickness of slab of the length in the gap of the flange part 21a of the flat part 61d of guide bracket 61 and upper bracket 21, flat part 61d and separator 72 and design; Make: when directing pin 71 being fastened to the upper surface 211a butt of step surface 714 and flange part 21a, the breakaway force of impulsive force when the car body front side breaks away from when flat part 61d applies predetermined pressing force, while upper bracket 21 and top Steering gear 42 because of secondary collision becomes desirable value.
As stated, till the step surface 714 through making directing pin 71 and the upper surface 211a butt of flange part 21a and the gap of the lower surface 715 of head 713 and the upper surface 211a of flange part 21a is set at predetermined value, can adjust above-mentioned breakaway force accurately.In addition, the fastening adjustment of directing pin 71 becomes easily, i.e. the adjustment operation of this breakaway force is easy, so can realize the shorteningization of built-up time.In addition, till as stated directing pin 71 being fastened to the upper surface 211a butt of step surface 714 and flange part 21a, can also guarantee the axial force of directing pin 71, prevent to wait the locking of the external screw thread 711 that causes simultaneously by vibration.
In addition; Push the upper surface of the flange part 722 of separator 72 with predetermined pressing force through the head 713 of directing pin 71 as stated; Upper bracket 21 by non-loosening be installed on guide bracket 61, can the damage load of upper bracket 21 be set at predetermined load.In addition, separator 72 also plays the flat part 61d that prevents directing pin 71 and guide bracket 61 because vibration grade and directly interfere the effect that produces noise.In addition, the separator 72 die-cut burr etc. that can also eliminate guiding groove 63 parts that produce by the scale error of the infinitesimal deformation of guide bracket 61, guiding groove 63, when the stamped of guide bracket 61 causes and damages the inhomogeneous of load.In addition, separator 72 also plays reduce upper bracket 21 stubborn and turns round load, promptly be the effect of the load that applies of the direction of center rotation with directing pin 71 to upper bracket 21.
As shown in Figure 5, the upside that is formed with to Fig. 5 at the upper surface 723 of the flange part 722 of separator 72 is the outstanding protuberance 724 of car body upper side.Protuberance 724 is formed with 6 with the interval of 60 degree on the same circumference of upper surface 723.Protuberance 724 forms, and length on the circumference is short, and the section that uses the vertical plane surface of the central axis through separator 72 to cut off out is trapezoidal, and the length of the upper base of car body upper side is shorter than the length of going to the bottom of upper surface 723 sides.Therefore, protuberance 724 forms, and uses the area of section of cutting off out with the central axis plane orthogonal of separator 72 to diminish to the car body upper side from upper surface 723.Its result, protuberance 724 will be set lessly with the area that the lower surface 715 of the head 713 of directing pin 71 contacts, and form the plastic deformation through little pressing force easily.
When the external screw thread 711 with directing pin 71 was screwed into negative thread 22, the lower surface 715 of the head 713 of directing pin 71 was pushed the upper surface of protuberance 724, made protuberance 724 plastic deformation, burst and decrease.Only through directing pin 71 is fixed in upper bracket 21; The lower surface 715 of the head 713 of directing pin 71 is pushed protuberance 724 and is made its plastic deformation, bursts and decrease; Limited gap with respect to the upper bracket 21 on the direction of damaging the moving direction quadrature; So do not need the adjustment operation in gap, assembling does not need skilled, has shortened built-up time.
That is, have manufacturing errors even each one is the height dimension of the car body above-below direction of upper bracket 21, guide bracket 61 etc., protuberance 724 is burst and is decreased and absorb the manufacturing errors of each one.Therefore, upper bracket 21 by seamlessly, promptly do not have with respect to the upper bracket 21 on the direction of damaging the moving direction quadrature be installed on guide bracket 61 loosely.In addition, burst through protuberance 724 and to decrease, the lower surface 715 that has suppressed head 713 is pushed the pressing force of the upper surface of protuberance 724, so can reduce the load that upper bracket 21 breaks away from from guide bracket 61 and be set to necessarily.
Impact when because of secondary collision makes the driver collide steering handwheel 101; When the car body front side applies powerful impulsive force; Break pin 24a cuts off, and the flange part 21a of upper bracket 21 breaks away from from box part 24, damages to car body front side (right side of Fig. 2, Fig. 3) and moves.So directing pin 71 is damaged to the car body front side with separator 72 and is moved.
Impact loading when secondary collision is in top during steering column 42; It is little and be set to certain that the lower surface 715 of head 713 is pushed the pressing force of upper surface of protuberance 724; Upper bracket 21 seamlessly is installed on guide bracket 61, so that work (moving I the goes out) load in when beginning is moved in the damage of top steering column 42 is little and become certain.
And then separator 72 is formed by synthetic resin, so there is not the metallic contact of guiding groove 63 and directing pin 71, can reduce the friction coefficient between the cylindrical portion 721 of guiding groove 63 and separator 72.Therefore, the absorptive character of the impact energy during secondary collision are stable, can set the absorption characteristic of impact load accurately.
< variation 1 of the 1st embodiment >
Next, the variation 1 to the 1st embodiment of the present invention describes.Fig. 6 is the block diagram of resinous separator in the variation 1 of expression the 1st embodiment of the present invention.In the explanation below, only, omit the explanation of repetition to partly describing with above-mentioned the 1st embodiment various structure.In addition, describe for same parts mark same-sign.This variation 1 is the variation of the resinous separator in the 1st embodiment, is the example that has changed to the shape of the outstanding protuberance of car body upper side from the upper surface of flange part.
As shown in Figure 6, synthetic resin system in this variation 1 and the separator of hollow cylindrical 73 are formed with cylindrical portion 731 in the car body lower side, are formed with the diameter discoid flange part 732 bigger than cylindrical portion 731 in the upper end of cylindrical portion 731.
The upside that is formed with to Fig. 6 at the upper surface 733 of the flange part 732 of separator 73 is the outstanding protuberance 734 of car body upper side.Protuberance 734 is formed with 10 with the interval of 36 degree on the same circumference of upper surface 733.Protuberance 734 has near the cone shape that has been cut off the summit of circle that the bottom surface is a minor diameter and car body upper side.Therefore, protuberance 734 will be set for a short time with the area that the lower surface 715 of the head 713 of directing pin 71 contacts, and form the plastic deformation through little pressing force easily.
Therefore, only through directing pin 71 is fixed in upper bracket 21, limited the gap with respect to the upper bracket 21 on the direction of damaging the moving direction quadrature, so do not need the adjustment operation in gap, assembling does not need skilled, has shortened built-up time.Burst through protuberance 734 and to decrease, the lower surface 715 that has suppressed head 713 is pushed the pressing force of the upper surface of protuberance 734, so can reduce the load that upper bracket 21 breaks away from from guide bracket 61 and be set to necessarily.And then separator 73 is formed by synthetic resin, so can reduce the friction coefficient between the cylindrical portion 731 of guiding groove 63 and separator 73.
< variation 2 of the 1st embodiment >
Next, the variation 2 to the 1st embodiment of the present invention describes.Fig. 7 is the block diagram of resinous separator in the variation 2 of expression the 1st embodiment of the present invention.In the explanation below, only, omit the explanation of repetition to partly describing with above-mentioned the 1st embodiment various structure.In addition, describe for the identical identical symbol of parts mark.This variation 2 is variation of the resinous separator in the 1st embodiment, is the example that has changed to the shape of the outstanding protuberance of car body upper side from the upper surface of flange part.
As shown in Figure 7, synthetic resin system in this variation 2 and the separator of hollow cylindrical 74 are formed with cylindrical portion 741 in the car body lower side, are formed with the diameter discoid flange part 742 bigger than cylindrical portion 741 in the upper end of cylindrical portion 741.
The upside that is formed with to Fig. 7 at the upper surface 743 of the flange part 742 of separator 74 is the outstanding protuberance 744 of car body upper side.Protuberance 744 is concentric on 1 of ring-type formation with flange part 742.Protuberance 744 forms, and the section that uses the vertical plane surface of the central axis through separator 74 to cut off out is trapezoidal, and the length of the upper base of car body upper side is shorter than the length of going to the bottom of upper surface 743 sides.Therefore, protuberance 744 will be set for a short time with the area that the lower surface 715 of the head 713 of directing pin 71 contacts, and form the plastic deformation through little pressing force easily.
Therefore, only through directing pin 71 is fixed in upper bracket 21, limited the gap with respect to the upper bracket 21 on the direction of damaging the moving direction quadrature, so do not need the adjustment operation in gap, assembling does not need skilled, has shortened built-up time.Burst through protuberance 744 and to decrease, the lower surface 715 that has suppressed head 713 is pushed the pressing force of the upper surface of protuberance 744, so can reduce the load that upper bracket 21 breaks away from from guide bracket 61 and be set to necessarily.And then separator 74 is formed by synthetic resin, so can reduce the friction coefficient between the cylindrical portion 741 of guiding groove 63 and separator 74.
< variation 3 of the 1st embodiment >
Next, the variation 3 to the 1st embodiment of the present invention describes.Fig. 8 is the block diagram of resinous separator in the variation 3 of expression the 1st embodiment of the present invention, and Fig. 8 A is the block diagram of observing from the upper surface side of flange part, and Fig. 8 B is the block diagram of observing from the lower side of Fig. 8 A.In the explanation below, only, omit the explanation of repetition to partly describing with above-mentioned the 1st embodiment various structure.In addition, describe for the identical identical symbol of parts mark.This variation 3 is variation of the resinous separator in the 1st embodiment, is that the outer peripheral face at separator is formed with and can damages the example of 2 parallel planar portions that move with guiding groove 63 contacts.
As shown in Figure 8, synthetic resin system in this variation 3 and the separator of hollow cylindrical 75 are formed with rectangular cylinder portion 751 in the car body lower side, are formed with the diameter discoid flange part 752 bigger than rectangular cylinder portion 751 in the upper end of rectangular cylinder portion 751.In rectangular cylinder portion 751, be formed with planar portions parallel to each other 755,755, the width W 1 of planar portions 755,755 forms has very little chimeric with guiding groove 63 with gap size.
Through planar portions 755,755, guiding groove 63 broadens with the area of the contact surface of separator 75, so can reduce the surface pressure of contact surface.Therefore, can be suppressed at upper bracket 21 when guide bracket 61 breaks away from and upper bracket 21 along guide bracket 61 damage when moving, upper bracket 21 blocks.
The upside that is formed with to Fig. 8 A at the upper surface 753 of the flange part 752 of separator 75 is the outstanding protuberance 754 of car body upper side.Protuberance 754 is formed with 6 with the interval of 60 degree on the same circumference of upper surface 753.Protuberance 754 forms, and length on the circumference is short, and the section that uses the vertical plane surface of the central axis through separator 75 to cut off out is trapezoidal, and the length of the upper base of car body upper side is shorter than the length of going to the bottom of upper surface 753 sides.Therefore, protuberance 754 will be set for a short time with the area that the lower surface 715 of the head 713 of directing pin 71 contacts, and form the plastic deformation through little pressing force easily.
Therefore, only through directing pin 71 is fixed in upper bracket 21, limited the gap with respect to the upper bracket 21 on the direction of damaging the moving direction quadrature, so do not need the adjustment operation in gap, assembling does not need skilled, has shortened built-up time.Burst through protuberance 754 and to decrease, the lower surface 715 that has suppressed head 713 is pushed the pressing force of the upper surface of protuberance 754, so can reduce the load that upper bracket 21 breaks away from from guide bracket 61 and be set to necessarily.And then separator 75 is formed by synthetic resin, so can reduce the planar portions 755 of guiding groove 63 and separator 75, the friction coefficient between 755.
< variation 4 of the 1st embodiment >
Next, the variation 4 to the 1st embodiment of the present invention describes.Fig. 9 is the block diagram of resinous separator in the variation 4 of expression the 1st embodiment of the present invention, and Fig. 9 A is the block diagram of observing from the upper surface side of flange part, and Fig. 9 B is the block diagram of observing from the lower side of Fig. 9 A.In the explanation below, only, omit the explanation of repetition to partly describing with above-mentioned the 1st embodiment various structure.In addition, describe for the identical identical symbol of parts mark.This variation 4 is variation of the resinous separator in the 1st embodiment, is that outer peripheral face at separator is formed with and can damages 2 parallel planar portions 765,765 of moving with guiding groove 63 contacts and the shape of the flange part of separator is formed rectangular-shaped example.
Shown in Fig. 9 A and Fig. 9 B; Synthetic resin system in this variation 4 and the separator of hollow cylindrical 76; Be formed with rectangular cylinder portion 761 in the car body lower side, be formed with the rectangular-shaped flange part 762 of the length on limit in length and breadth in the upper end of rectangular cylinder portion 761 than rectangular cylinder portion's 761 length.In rectangular cylinder portion 761, be formed with 2 planar portions 765,765 parallel to each other, the width W 2 of planar portions 765,765 forms has very little chimeric with guiding groove 63 with gap size.
Guiding groove 63 broadens with the area of the contact surface of planar portions 765,765, so can reduce the surface pressure of contact surface.Therefore, can be suppressed at upper bracket 21 when guide bracket 61 breaks away from and upper bracket 21 along guide bracket 61 damage when moving, upper bracket 21 blocks.
The upside that is formed with to Fig. 9 A at the upper surface 763 of the flange part 762 of separator 76 is the outstanding protuberance 764 of car body upper side.Protuberance 764 is formed with 6 with the interval of 60 degree on the same circumference of upper surface 763.Protuberance 764 forms, and length on the circumference is short, and the section that uses the vertical plane surface of the central axis through separator 76 to cut off out is trapezoidal, and the length of the upper base of car body upper side is shorter than the length of going to the bottom of upper surface 763 sides.Therefore, protuberance 764 will be set for a short time with the area that the lower surface 715 of the head 713 of directing pin 71 contacts, and form the plastic deformation through little pressing force easily.
Therefore, only through directing pin 71 is fixed in upper bracket 21, limited the gap with respect to the upper bracket 21 on the direction of damaging the moving direction quadrature, so do not need the adjustment operation in gap, assembling does not need skilled, has shortened built-up time.Burst through protuberance 764 and to decrease, the lower surface 715 that has suppressed head 713 is pushed the pressing force of the upper surface of protuberance 764, so can reduce the load that upper bracket 21 breaks away from from guide bracket 61 and be set to necessarily.And then separator 765 is formed by synthetic resin, so can reduce the planar portions 765 of guiding groove 63 and separator 76, the friction coefficient between 765.
< variation 5 of the 1st embodiment >
Next, the variation 5 to the 1st embodiment of the present invention describes.Figure 10 be resinous separator and guiding groove in the variation 5 of expression the 1st embodiment of the present invention contact part with the cooresponding figure of Fig. 4.In the explanation below, only, omit the explanation of repetition to partly describing with above-mentioned the 1st embodiment various structure.In addition, describe for the identical identical symbol of parts mark.This variation 5 is variation of the 1st embodiment, is to form greatlyyer example with the bending of the periphery of guiding groove, for the area of the cylindrical portion 721 that makes separator 72 and the contact surface of guiding groove 63.
Shown in figure 10, on the guide portion 61b of guide bracket 61, the middle position in the overall width direction of guide portion 61b is formed with the guiding groove 63 that is used for the damage of upper bracket 21 is moved channeling conduct.And then, through flanging processing the rising portions 64 of periphery bending formation, form the area of the contact surface of the cylindrical portion 721 of guiding groove 63 and separator 72 bigger to the car body lower side with guiding groove 63.
Form the area of guiding groove 63 and the contact surface of the cylindrical portion 721 of separator 72 bigger through flanging processing, so the surface pressure of guiding groove 63 and the contact surface of cylindrical portion 721 descends.In addition, not that the punching press section is used as the contact surface that contacts with cylindrical portion 721, so the contact surface that contacts with cylindrical portion 721 becomes smooth.Therefore, through using simultaneously with plastic separator 72, the absorptive character of the impact energy during secondary collision are stable, can set the absorption characteristic of impact load accurately.
< variation 6 of the 1st embodiment >
Next, the variation 6 to the 1st embodiment of the present invention describes.Figure 11 A be resinous separator and guiding groove in the variation 6 of expression the 1st embodiment of the present invention contact part with the cooresponding figure of Fig. 4, Figure 11 B is the front view of the directing pin monomer of presentation graphs 11A.In the explanation below, only, omit the explanation of repetition to partly describing with above-mentioned the 1st embodiment various structure.In addition, describe for the identical identical symbol of parts mark.This variation 6 is variation of the 1st embodiment, is to rivet (カ シ メ) processing and the example that directing pin 71 is fixed in upper bracket 21.
Shown in Figure 11 A, on the flange part 21a of upper bracket 21, be formed with through hole 25 at the middle position of overall width direction.Insert directing pin 71 from the car body upper side through guiding groove 63, the minor diameter axial region 716 of the lower end of directing pin 71 is inserted through holes 25.The axial length of minor diameter axial region 716 forms longlyer than the external screw thread in the 1st embodiment 711.Next, make from the lower end plastic deformation of the outstanding minor diameter axial region 716 of through hole 25 through riveted joint processing to form hemispherical head 717, directing pin 71 is fixed in flange part 21a.
Directing pin 71 is formed with: minor diameter axial region 716; Columned axial region 712, it is formed at the top of minor diameter axial region 716, and diameter is bigger than minor diameter axial region 716; With discoid head 713, it is formed at the upper end of axial region 712, and diameter is bigger than axial region 712.Directing pin 71 is that iron etc. is metal.On the outer peripheral face of axial region 712, be embedded with separator 72 outward.Separator 72 is the structure identical with the 1st embodiment, so omit detailed explanation.
Make its plastic deformation when processing is riveted in the lower end of the minor diameter axial region 716 of directing pin 71, when directing pin 71 is fixed in flange part 21a, the step surface 714 of the car body lower side of axial region 712 stops with the upper surface 211a butt of flange part 21a.Its result, the lower surface 715 of the head 713 of directing pin 71 is pushed the upper surface of the flange part 722 of separator 72.Through the dimensional accuracy of directing pin 71 monomers, suppressed protuberance because of the burst change of the amount of decreasing of plastic deformation, so that assembling does not need is skilled, shortened built-up time.
< variation 7 of the 1st embodiment >
Next, the variation 7 to the 1st embodiment of the present invention describes.Figure 12 A be resinous separator and guiding groove in the variation 7 of expression the 1st embodiment of the present invention contact part with the cooresponding figure of Fig. 4, Figure 12 B is the front view of the directing pin monomer of presentation graphs 12A.In the explanation below, only, omit the explanation of repetition to partly describing with above-mentioned the 1st embodiment various structure.In addition, describe for the identical identical symbol of parts mark.This variation 7 is variation of the 1st embodiment, is nut 718 is screwed on the external screw thread of directing pin 71 and is fixed in the example of upper bracket 21.
Shown in Figure 12 A, on the flange part 21a of upper bracket 21, be formed with through hole 25 at the middle position of overall width direction.Insert directing pin 71 from the car body upper side through guiding groove 63, the external screw thread 711 of the lower end of directing pin 71 is inserted through holes 25.The axial length of external screw thread 711 forms longlyer than the external screw thread in the 1st embodiment 711.Next, at the nut 718 of screwing on from through hole 25 outstanding external screw threads 711, nut 718 is anchored on the lower surface of flange part 21a and directing pin 71 is fixed in flange part 21a.
Directing pin 71 is formed with: external screw thread 711; Columned axial region 712, it is formed at the top of external screw thread 711, and diameter is bigger than external screw thread 711; With discoid head 713, it is formed at the upper end of axial region 712, and diameter is bigger than axial region 712.Directing pin 71 is that iron etc. is metal.At the outer peripheral face of axial region 712, be embedded with separator 72 outward.Separator 72 is the structure identical with the 1st embodiment, so omit detailed explanation.
When the lower end that nut 718 is screwed in the external screw thread 711 of directing pin 71, when directing pin 71 was fixed in flange part 21a, the step surface 714 of the car body lower side of axial region 712 stopped with the upper surface 211a butt of flange part 21a.Its result, the lower surface 715 of the head 713 of directing pin 71 is pushed the upper surface of the flange part 722 of separator 72.Through the dimensional accuracy of directing pin 71 monomers, suppressed protuberance because of the burst change of the amount of decreasing of plastic deformation, so that assembling does not need is skilled, shortened built-up time.
< variation 8 of the 1st embodiment >
Next, the variation 8 to the 1st embodiment of the present invention describes.Figure 13 A be resinous separator and guiding groove in the variation 8 of expression the 1st embodiment of the present invention contact part with the cooresponding figure of Fig. 4; Figure 13 B is the front view of the directing pin monomer of presentation graphs 13A, and Figure 13 C is the cutaway view of the axle sleeve monomer of presentation graphs 13A.In the explanation below, only, omit the explanation of repetition to partly describing with above-mentioned the 1st embodiment various structure.In addition, describe for the identical identical symbol of parts mark.
This variation 8 is variation of the 1st embodiment, is as with the length setting in the lower surface 715 of head 713 and the gap between the upper surface 211a configuration part, gap for predetermined value, the example of the axle sleeve 77 of employing hollow cylindrical.
Shown in Figure 13 A, on the flange part 21a of upper bracket 21, be formed with negative thread 22 at the middle position of overall width direction.Insert directing pin 71 from the car body upper side through guiding groove 63, the external screw thread 711 of the lower end of directing pin 71 is screwed into negative thread 22 and directing pin 71 is fixed in flange part 21a.
On directing pin 71, be formed with: external screw thread 711; Columned axial region 719, it is formed at the top of external screw thread 711, and diameter and external screw thread 711 are roughly the same; With discoid head 713, it is formed at the upper end of axial region 719, and diameter is bigger than axial region 719.Directing pin 71 is that iron etc. is metal.At the outer peripheral face of axial region 719, be embedded with the axle sleeve 77 of hollow cylindrical outward.Axle sleeve 77 is that iron etc. is metal.At the outer peripheral face of axle sleeve 77, be embedded with separator 72 outward.Separator 72 is the structure identical with the 1st embodiment, so omit detailed explanation.
When the external screw thread 711 with directing pin 71 was screwed into negative thread 22, the end face 771 of the car body lower side of axle sleeve 77 stopped with the upper surface 211a butt of flange part 21a.Its result, the lower surface 715 of the head 713 of directing pin 71 is pushed the upper surface of the flange part 722 of separator 72.If the axial length L of axle sleeve 77 is fabricated to predetermined length, then the length in the lower surface 715 of head 713 and the gap between the upper surface 211a is just confirmed.Configuration part, gap in the variation 8 of axle sleeve 77 formations the 1st embodiment of hollow cylindrical is predetermined value with the lower surface 715 of head 713 and the length setting in the gap between the upper surface 211a.
In addition, the length L of axle sleeve 77 designs to such an extent that ratio is big along the length of the central axis of separator 72.In more detail; The length L of axle sleeve 77; Based on the thickness of the flange part 722 of the thickness of slab of the length in the gap of the flange part 21a of the flat part 61d of guide bracket 61 and upper bracket 21, flat part 61d and separator 72 and design; Make: contact with the upper surface of axle sleeve 77 until the lower surface 715 of head 713 in fastening directing pin 71, till the upper surface 211a butt of the lower surface of axle sleeve 77 and flange part 21a the time; Apply predetermined pressing force to flat part 61d, the breakaway force of impulsive force when the car body front side breaks away from when upper bracket 21 and top Steering gear 42 are because of secondary collision simultaneously becomes desirable value.
When the external screw thread 711 with directing pin 71 was screwed into negative thread 22, the lower surface 715 of the head 713 of directing pin 71 was pushed the upper surface of the protuberance of separator 7, made protuberance 724 plastic deformation, burst and decrease.Only be fixed in upper bracket 21 through the directing pin 71 that will be embedded with axle sleeve 77 outward; Just limited gap with respect to the upper bracket 21 on the direction of damaging the moving direction quadrature; So do not need the adjustment operation in gap, assembling does not need skilled, has shortened built-up time.
In above-mentioned the 1st embodiment and variation 1～8 thereof; Example for the steering hardware of the tilt telescopic formula of obliquity that applies the present invention to carry out Steering gear and telescopic location both sides' adjustment is illustrated, but also can apply the present invention to tilting steering hardware, telescopic steering hardware, can not adjust the steering hardware that obliquity can not be adjusted telescopic location.
In addition, the shape of the guiding groove 63 of the guide bracket 61 in the 1st embodiment of the present invention and the variation 1～8 thereof is not limited to above-mentioned shape, also can be made as the 2nd following embodiment and the shape shown in the variation 1～6 thereof.Thus, can realize such steering hardware: reduce to damage directing pin 71 when moving with the friction drag between the guiding groove 63 and it is stablized, and the impact absorption load can set secondary collision accurately the time.
Below, based on accompanying drawing the 2nd embodiment of the present invention and variation 1～6 thereof are described.
< the 2nd embodiment >
Figure 14 is the block diagram of wanting portion of the steering hardware of expression the 2nd embodiment of the present invention, is the block diagram of observing from the upper right quarter of car body rear side.Figure 15 is the peripheral birds-eye view of car body rear side of the guide bracket of Figure 14.Figure 16 is near the amplification plan view the square end behind the car body of guiding groove of guide bracket of Figure 15.Figure 17 is the 17A-17A cutaway view of Figure 15 of the contact part of expression directing pin and guiding groove.
To shown in Figure 17, steering column assembly 105 is made up of the bottom Steering gear 46 as inner steering column as the car body front side of the top Steering gear 42 of outer Steering gear and top Steering gear 42 like Figure 14.At the car body rear side the not shown steering shaft of steering handwheel shown in Figure 1 101 is installed, gets and to rotate by top cylindraceous Steering gear 42 axle bearings.Top Steering gear 42 can tilt adjustments be adjusted with elongated slot 121,121 guiding, and this tilt adjustments is formed at side plate 21b, 21b as the upper bracket 21 of top car body installation bracket with elongated slot 121,121.
The right side of Figure 14 of Steering gear 42 is a car body front side part on top, is embedded with to telescopic moving bottom Steering gear 46 in the axial direction, and the car body front side of Steering gear 46 in the bottom is equipped with the gear case 47 of electronic auxiliary mechanism 102.Above the car body of this gear case 47, the lower tray 44 as bottom car body installation bracket that is fixed in not shown car body is installed, it can be that inclination is adjusted at the center with inclination center shaft 45 that this lower tray 44 is got by axle bearing.
In addition, on the upper surface of top Steering gear 42, be formed with the groove 421 of the inner peripheral surface that penetrates into top Steering gear 42.And then top Steering gear 42 possesses integratedly and has formed the member of flexible adjustment with elongated slot 422,422, and said flexible adjustment is extended with the central axis that elongated slot 422 forms long axis direction and top Steering gear 42 abreast.
Tilt adjustments with elongated slot 121,121 and flexible adjustment with elongated slot 422,422 in, the slotting anchorage bar 51 that is connected with.In the end of this anchorage bar 51, control lever 52 is installed, not shown movable cam and stationary cam through by these control lever 52 operations constitute the cam lock structure.
Through the swinging operation of control lever 52, the side of the fastening top of side plate 21b, the 21b Steering gear 42 through upper bracket 21.Through this fastening/fastening releasing operation, by upper bracket 21 top Steering gear 42 is clamped/unclamps, when unclamping, carry out the adjustment of the obliquity of top Steering gear 42.In addition, through this fastening/fastening releasing operation, the reduced of top Steering gear 42, the inner peripheral surface of top Steering gear 42 clamps/unclamps the outer peripheral face of bottom Steering gear 46, when unclamping, carries out the adjustment of the telescopic location of top Steering gear 42.
From gear to 47 to the output shaft 107 of the outstanding Fig. 1 of car body front side via tween drive shaft 106, be linked to steering gear assembly 103 with the rack shaft gears in mesh, the rotary manipulation of steering handwheel 101 is delivered to steering hardware.
Upper bracket 21 is fixed in not shown car body with the mode that can break away from when the secondary collision.Upper bracket 21 is shown in figure 17 to be made up of following member: above-mentioned side plate 21b, 21b; Above car body, these side plates being linked is the upper plate 21c of one; With the upper surface that is fixedly set in upper plate 21c, at the upwardly extending flange part 21a of right and left, 21a.The mounting structure of car body and upper bracket 21 is shown in figure 15 to be made up of following member: two groovings of pair of right and left 23,23, and it is formed at flange part 21a, 21a; With box part 24,24, it embeds the left and right sides edge part of grooving 23,23; This mounting structure has with respect to the central axis of top Steering gear 42 symmetrical structure on as the overall width direction of the above-below direction of Figure 15.In addition, box part 24,24 is from the car body above-below direction clamped flanges 21a of portion, 21a.
Upper bracket 21 and top Steering gear 42 are made up of conductive materials such as metals, and grooving 23,23 is to the car body rear side opening of flange part 21a.The above-below direction of Figure 15 of grooving 23,23 is that the groove width of overall width direction forms the taper that broadens gradually to the car body rear side from the car body front side.Box part 24,24 has the guide surface 241,241 of taper of the left and right sides edge part of the grooving 23,23 that embeds this taper.Through the structure of this taper, when secondary collision, upper bracket 21 breaks away from from box part 24,24 easily.
The box part 24,24 that is embedded in grooving 23,23 is made up of the conductive materials such as metal as light alloy such as aluminium, zinc alloy diecasting.Box part 24,24 combines with flange part 21a through 4 break pin 24a respectively.In addition, box part 24,24 is fixed in car body through inserting to lead in the not shown bolt of the bolt hole 24b that is formed at box part 24.
Impact when because of secondary collision makes the driver collide steering handwheel 101; When the car body front side applies powerful impulsive force; Break pin 24a cuts off, and the flange part 21a of upper bracket 21 breaks away from from box part 24, is that the damage of car body front side is moved to the right side of Figure 14, Figure 15.So Steering gear 46 damage to move to the car body front side top Steering gear 42 along the bottom, energy-absorbing member is damaged and impact energy during absorbing impact.
Shown in figure 14 on lower tray 44, be fixed with the installation portion 61a of the car body forward end that is formed at guide bracket 61 through bolt 62.Guide bracket 61 is with metallo-sheet material bending and be shaped, and the end in the car body lower side of installation portion 61a is formed with the guide portion 61b that is bent into the L font to the car body rear side.At the connecting portion of installation portion 61a and guide portion 61b, be formed with rib 61c, 61c to improve the rigidity of guide bracket 61.
Guide portion 61b disposes to such an extent that more lean on the car body upper side than the flange part 21a of upper bracket 21, and Steering gear 46 extends to the car body rear side with this bottom Steering gear 46 abreast along the bottom, has near the length the square end behind the car body that arrives flange part 21a.Like Figure 14 and shown in Figure 17,, be provided with the flat part 61d that forms the plane to car body upper side protuberance at the middle position of the overall width direction of guide portion 61b.Flat part 61d extends to the car body rear side from the end of the car body lower side of car body front side installation portion 61a, between the flange part 21a of this flat part 61d and upper bracket 21, is formed with predetermined gap.At the middle position of the overall width direction of flat part 61d, be formed with the guiding groove 63 that is used for the damage of upper bracket 21 is moved channeling conduct abreast with the central axis of bottom Steering gear 46.
The central axis that guiding groove 63 forms with respect to bottom Steering gear 46 extends abreast.In addition, shown in figure 17, on the flange part 21a of upper bracket 21, be formed with negative thread 22 at the middle position of overall width direction.Insert directing pin 71 from the car body upper side through guiding groove 63, the external screw thread 711 on directing pin 71 tops is screwed into negative thread 22 and directing pin 71 is fixed in flange part 21a.
Directing pin 71 forms as one following member and constitutes: external screw thread 711; Columned axial region 712, it is formed at the top of external screw thread 711, and diameter is bigger than external screw thread 711; With discoid head 713, it is formed at the upper end of axial region 712, and diameter is bigger than axial region 712.The head 713 of directing pin 71 is pushed guide bracket 61 from the top, restriction is with respect to the gap of the upper bracket 21 on the direction of damaging the moving direction quadrature.Directing pin 71 is that iron etc. is metal.At the outer peripheral face of axial region 712, be embedded with plastic separator cylindraceous 72 outward.The polyformaldehyde moulding of being abbreviated as POM that separator 72 is little by friction coefficient, engineering properties is excellent.On separator 72, be formed with cylindrical portion 721 in the car body lower side, be formed with the diameter discoid flange part 722 bigger than cylindrical portion 721 in the upper end of cylindrical portion 721.At the upper surface 723 of the flange part 722 of separator 72, with above-mentioned the 1st embodiment likewise, being formed with 6 upsides to Figure 17 is the outstanding protuberance 724 of car body upper side.
When the external screw thread 711 with directing pin 71 was screwed into negative thread 22, the end face of the car body lower side of axial region 712 was connected to the upper surface 211a of flange part 21a and stops.Therefore, the head 713 of directing pin 71 is pushed the upper surface of the flange part 722 of separator 72 with predetermined pressing force.Therefore, upper bracket 21 by non-loosening be installed on guide bracket 61, the damage load of upper bracket 21 is set at predetermined load.
Like Figure 15, shown in Figure 16, the guiding groove 63 in the 2nd embodiment is made up of the narrow width slot part 631 of the groove width W1 of square end behind the car body and the wide degree slot part 632 of the groove width W2 of the car body front side that is formed at narrow width slot part 631.The groove width W2 of wide degree slot part 632 forms widelyer than the groove width W1 of narrow width slot part 631.At the connecting portion of narrow width slot part 631 with wide degree slot part 632, be formed with inclination slot part 633, this inclination slot part 633 forms groove width to be changed to wide degree slot part 632 from narrow width slot part 631 continuously.
The groove width W1 of narrow width slot part 631 is set at the size of the cylindrical portion 721 with small separator of clamping with gap 72.The groove width W2 of wide degree slot part 632 sets forr a short time than the outside dimension D shown in Figure 4 of the flange part 722 of separator 72.Therefore, even upper bracket 21 damage to move to the car body front side, directing pin 71, separator 72 also not leniently width slot part 632 come off.
Impact when because of secondary collision makes the driver collide steering handwheel 101; When the car body front side applies strong wallop; Break pin 24a cuts off, and the flange part 21a of upper bracket 21 breaks away from from box part 24, is that the damage of car body front side is moved to the right side of Figure 14, Figure 15.So directing pin 71 is damaged to the car body front side with separator 72 and is moved.
Shown in the white arrow F of Figure 15, Figure 16, the impact load F when secondary collision does the time spent with respect to the central axis of top Steering gear 42 to the overall width direction obliquely, and the outer peripheral face of the cylindrical portion 721 of separator 72 is pulled on the narrow width slot part 631.At the car body front side of narrow width slot part 631 near being formed with inclination slot part 633, so cylindrical portion 721 arrives wide degree slot part 632 smoothly along inclination slot part 633.Therefore, the working load in the time of can beginning being moved in damage suppresses lessly.
In damaging the way of moving, wide degree slot part 632 has big gap with respect to the cylindrical portion 721 of separator 72, so can suppress to damage the increase of the resistance when moving.And then separator 72 is formed by synthetic resin, so there is not the metallic contact of guiding groove 63 and directing pin 71, can reduce the friction coefficient between the cylindrical portion 721 of guiding groove 63 and separator 72.Therefore, the absorptive character of the impact energy during secondary collision are stable, can set the absorption characteristic of impact load accurately.
< variation 1 of the 2nd embodiment >
Next, the variation 1 to the 2nd embodiment of the present invention describes.Figure 18 be the expression the 2nd embodiment of the present invention variation 1 in guiding groove with the cooresponding figure of Figure 16.In the explanation below, only, omit the explanation of repetition to partly describing with above-mentioned the 2nd embodiment various structure.In addition, describe for the identical identical symbol of parts mark.This variation 1 is the variation of the guiding groove in the 2nd embodiment, is to form the example that groove width square end behind the car body broadens to the car body front side gradually.
Shown in figure 18, the guiding groove 64 in this variation 1 forms groove width and broadens gradually to the car body front side with angle [alpha] square end behind the car body.That is, guiding groove 64 has inclination slot part 642, and it is tangent to the periphery of the cylindrical portion 721 of car body front side and separator 72 that this inclination slot part 642 forms behind the car body the circular-arc closed ends 641 of square end.The groove width of the wideest part of guiding groove 64 is set forr a short time than the outside dimension D of the flange part 722 of separator 72.Therefore, move even upper bracket 21 is damaged to the car body front side, directing pin 71, separator 72 can not come off from guiding groove 64 yet.
Impact during because of secondary collision makes the driver collide steering handwheel 101, and the flange part 21a of upper bracket 21 is that the damage of car body front side is moved to the right side of Figure 18.So directing pin 71 is damaged to the car body front side with separator 72 and is moved.
Shown in the white arrow F of Figure 18, the impact load F when secondary collision does the time spent with respect to the central axis of top Steering gear 42 to the overall width direction obliquely, and the outer peripheral face of the cylindrical portion 721 of separator 72 is pulled on the inclination slot part 642 of guiding groove 64.Inclination slot part 642 forms with angle [alpha], and moves so cylindrical portion 721 is damaged along inclination slot part 642 smoothly.Therefore, the working load in the time of can beginning being moved in damage suppresses lessly.In damaging the way of moving, the groove width of inclination slot part 642 has bigger gap with respect to the outer peripheral face of the cylindrical portion 721 of separator 72, so can suppress to damage the increase of the resistance when moving.Therefore, the absorptive character of the impact energy during secondary collision are stable, can set the absorption characteristic of impact load accurately.
< variation 2 of the 2nd embodiment >
Next, the variation 2 to the 2nd embodiment of the present invention describes.Figure 19 be the expression the 2nd embodiment of the present invention variation 2 in guiding groove with the cooresponding figure of Figure 16.In the explanation below, only, omit the explanation of repetition to partly describing with above-mentioned the 2nd embodiment various structure.In addition, describe for the identical identical symbol of parts mark.This variation 2 is variation of the guiding groove in the 2nd embodiment, is the example that shape to narrow width slot part and inclination slot part has changed.
Shown in figure 19, the guiding groove 65 in this variation 2 is made up of the narrow width slot part 651 of the groove width W1 of square end behind the car body and the wide degree slot part 652 of the groove width W2 of the car body front side that is formed at narrow width slot part 651.Till holding tank 631 in the 2nd embodiment forms near the car body forward end of the cylindrical portion 721 that extends to separator 72, but the holding tank 651 in the variation 1 of the 2nd embodiment forms the position at the center that only extends to the cylindrical portion 721 that surpasses separator 72 slightly.
The groove width W2 of wide degree slot part 652 forms widelyer than the groove width W1 of narrow width slot part 651.At the connecting portion of narrow width slot part 651 with wide degree slot part 652; Be formed with from narrow width slot part 651 to the rectangular step slot part 653 of overall width direction outside bending, this step slot part 653 form groove width from narrow width slot part 651 to wide degree slot part 652 steep variations.
The groove width W1 of narrow width slot part 651 is set at the size of the cylindrical portion 721 with small separator of clamping with gap 72.The groove width W2 of wide degree slot part 652 sets forr a short time than the outside dimension D shown in Figure 19 of the flange part 722 of separator 72.Therefore, even upper bracket 21 damage to move to the car body front side, directing pin 71, separator 72 also not leniently width slot part 652 come off.
Impact during because of secondary collision makes the driver collide steering handwheel 101, and the flange part 21a of upper bracket 21 is that the damage of car body front side is moved to the right side of Figure 19.So directing pin 71 is damaged to the car body front side with separator 72 and is moved.
Shown in the white arrow F of Figure 19, the impact load F when secondary collision does the time spent with respect to the central axis of top Steering gear 42 to the overall width direction obliquely, and the outer peripheral face of the cylindrical portion 721 of separator 72 is pulled on the narrow width slot part 651.Car body front side at narrow width slot part 651 closely is formed with step slot part 653, so cylindrical portion 721 arrives wide degree slot part 652 smoothly along step slot part 653.Therefore, the working load in the time of can beginning being moved in damage suppresses lessly.In damaging the way of moving, wide degree slot part 652 has bigger gap with respect to the cylindrical portion 721 of separator 72, so can suppress to damage the increase of the resistance when moving.Therefore, the absorptive character of the impact energy during secondary collision are stable, can set the absorption characteristic of impact load accurately.
< variation 3 of the 2nd embodiment >
Next, the variation 3 to the 2nd embodiment of the present invention describes.Figure 20 be the expression the 2nd embodiment of the present invention variation 3 in guiding groove with the cooresponding figure of Figure 16.In the explanation below, only, omit the explanation of repetition to partly describing with above-mentioned the 2nd embodiment various structure.In addition, describe for the identical identical symbol of parts mark.This variation 3 is variation of the variation 2 of the 2nd embodiment, is the example that the step slot part is changed to the inclination slot part.
Shown in figure 20, the guiding groove 66 in this variation 3 is made up of the wide degree slot part 662 of the narrow width slot part of the groove width W1 of square end behind the car body 661 with the groove width W2 of the car body front side that is formed at narrow width slot part 661.The holding tank 661 in this variation 3 and the variation 2 of the 2nd embodiment likewise form the position at the center that only extends to the cylindrical portion 721 that surpasses separator 72 slightly.
The groove width W2 of wide degree slot part 662 forms widelyer than the groove width W1 of narrow width slot part 661.At the connecting portion of narrow width slot part 661 with wide degree slot part 662, be formed with inclination slot part 663, this inclination slot part 663 forms groove width to be changed to wide degree slot part 662 from narrow width slot part 661 continuously.
The groove width W1 of narrow width slot part 661 is set at the size of the cylindrical portion 721 with small separator of clamping with gap 72.The groove width W2 of wide degree slot part 662 sets forr a short time than the outside dimension D shown in Figure 20 of the flange part 722 of separator 72.Therefore, even upper bracket 21 damage to move to the car body front side, directing pin 71, separator 72 also not leniently width slot part 662 come off.
Impact during because of secondary collision makes the driver collide steering handwheel 101, and the flange part 21a of upper bracket 21 is that the damage of car body front side is moved to the right side of Figure 20.So directing pin 71 is damaged to the car body front side with separator 72 and is moved.
Shown in the white arrow F of Figure 20, the impact load F when secondary collision does the time spent with respect to the central axis of top Steering gear 42 to the overall width direction obliquely, and the outer peripheral face of the cylindrical portion 721 of separator 72 is pulled on the narrow width slot part 661.Car body front side at narrow width slot part 661 closely is formed with inclination slot part 663, so cylindrical portion 721 arrives wide degree slot part 662 smoothly along inclination slot part 663.Therefore, the working load in the time of can beginning being moved in damage suppresses lessly.In damaging the way of moving, wide degree slot part 662 has bigger gap with respect to the cylindrical portion 721 of separator 72, so can suppress to damage the increase of the resistance when moving.Therefore, the absorptive character of the impact energy during secondary collision are stable, can set the absorption characteristic of impact load accurately.
< variation 4 of the 2nd embodiment >
Next, the variation 4 to the 2nd embodiment of the present invention describes.Figure 21 be the expression the 2nd embodiment of the present invention variation 4 in guiding groove with the cooresponding figure of Figure 16.In the explanation below, only, omit the explanation of repetition to partly describing with above-mentioned the 2nd embodiment various structure.In addition, describe for the identical identical symbol of parts mark.This variation 4 is variation of the guiding groove in the 2nd embodiment, be form groove width from the car body rear the distolateral example that has sharply broadened to the car body front side.
Shown in figure 21, the guiding groove 67 in this variation 4 forms, and groove width square end behind the car body sharply broadens to the car body front side.That is, guiding groove 67, the groove width W2 of its wide degree slot part 672 form greatlyyer than the diameter of the cylindrical portion 721 of separator 72, and the diameter of the circular-arc closed ends 671 of square end forms the size identical with the groove width W2 of wide degree slot part 672 behind the car body.Circular-arc closed ends 671 is tangent with the car body rear side of the periphery of the cylindrical portion 721 of separator 72.The groove width W2 of wide degree slot part 672 sets forr a short time than the outside dimension D shown in Figure 21 of the flange part 722 of separator 72.Therefore, move even upper bracket 21 is damaged to the car body front side, directing pin 71, separator 72 can not come off from guiding groove 67 yet.
Impact during because of secondary collision makes the driver collide steering handwheel 101, and the flange part 21a of upper bracket 21 is that the damage of car body front side is moved to the right side of Figure 21.So directing pin 71 is damaged to the car body front side with separator 72 and is moved.
Shown in the white arrow F of Figure 21; Impact load F when secondary collision does the time spent with respect to the central axis of top Steering gear 42 to the overall width direction obliquely, and the outer peripheral face of the cylindrical portion 721 of separator 72 is pulled on the circular-arc closed ends 671 of guiding groove 67.Circular-arc closed ends 671 is formed by level and smooth curve, moves so cylindrical portion 721 is damaged along circular-arc closed ends 671 smoothly.Therefore, the working load in the time of can beginning being moved in damage suppresses lessly.In damaging the way of moving, the groove width of wide degree slot part 672 has bigger gap with respect to the outer peripheral face of the cylindrical portion 721 of separator 72, so can suppress to damage the increase of the resistance when moving.Therefore, the absorptive character of the impact energy during secondary collision are stable, can set the absorption characteristic of impact load accurately.
< variation 5 of the 2nd embodiment >
Next, the variation 5 to the 2nd embodiment of the present invention describes.Figure 22 is directing pin and the contact part and the cooresponding figure of Figure 17 of guiding groove in the variation 5 of expression the 2nd embodiment of the present invention.In the explanation below, only, omit the explanation of repetition to partly describing with above-mentioned the 2nd embodiment various structure.In addition, describe for the identical identical symbol of parts mark.This variation 5 is variation of the 2nd embodiment, is the example that has omitted plastic separator 72.
Shown in figure 22, at the flange part 21a of upper bracket 21, be formed with negative thread 22 at the middle position of overall width direction.Insert directing pin 71 from the car body upper side through guiding groove 63, the external screw thread 711 on directing pin 71 tops is screwed into negative thread 22 and directing pin 71 is fixed in flange part 21a.
Directing pin 71 forms as one following member and constitutes: external screw thread 711; Columned axial region 712, it is formed at the top of external screw thread 711, and diameter is bigger than external screw thread 711; With discoid head 713, it is formed at the upper end of axial region 712, and diameter is bigger than axial region 712.Directing pin 71 is that iron etc. is metal.In this variation 5, with plastic separator 72 omissions of the outer peripheral face that is embedded in axial region 712 outward.
When the external screw thread 711 with directing pin 71 was screwed into negative thread 22, the end face of the car body lower side of axial region 712 was connected to the upper surface 211a of flange part 21a and stops.Therefore, the head 713 of directing pin 71 is pushed the upper surface of the flat part 61d of guide bracket 61 with predetermined pressing force.Therefore, upper bracket 21 by non-loosening be installed on guide bracket 61, the damage load of upper bracket 21 is set at predetermined load.
Promptly; Even if omitted plastic separator 72; If but formed guiding grooves 67 according to the guiding groove of having explained in the 2nd embodiment and the variation 1～4 thereof 63, then the absorptive character of the impact energy during secondary collision would be stable, can set the absorption characteristic of impact load accurately.In addition, as other examples, also can directing pin 71 be made as synthetic resin system and omit plastic separator 72.
In addition; The lower surface 715 of the head 713 of directing pin 71 and the length between the step surface 714; Based on the thickness of slab of the length in the gap of the flange part 21a of the flat part 61d of guide bracket 61 and upper bracket 21 and flat part 61d and design; Make: in fastening directing pin 71 during until the upper surface 211a butt of step surface 714 and flange part 21a; Apply predetermined pressing force to flat part 61d, the breakaway force of impulsive force when the car body front side breaks away from when upper bracket 21 and top Steering gear 42 are because of secondary collision simultaneously becomes desirable value.
< variation 6 of the 2nd embodiment >
Next, the variation 6 to the 2nd embodiment of the present invention describes.Figure 23 is directing pin and the contact part and the cooresponding figure of Figure 17 of guiding groove in the variation 6 of expression the 2nd embodiment of the present invention.In the explanation below, only, omit the explanation of repetition to partly describing with above-mentioned the 2nd embodiment various structure.In addition, describe for the identical identical symbol of parts mark.This variation 6 is variation of the variation 5 of the 2nd embodiment, is plastic separator 72 is omitted and the periphery bending of guiding groove is formed greatlyyer with the area with the axial region 712 of directing pin 71 and the contact surface of guiding groove example.
Shown in figure 23, at the flat part 61d of guide bracket 61, the middle position in the overall width direction of flat part 61d is formed with the guiding groove 63 that is used for the damage of upper bracket 21 is moved channeling conduct.Guiding groove 63 through flanging processing with the periphery bending of guiding groove 63, form rising portions 68 to the car body lower side, will form greatlyyer with the area of the contact surface of the axial region 712 of separator 72.
At the flange part 21a of upper bracket 21, be formed with negative thread 22 at the middle position of overall width direction.Insert directing pin 71 from the car body upper side through guiding groove 63, the external screw thread 711 on directing pin 71 tops is screwed into negative thread 22, directing pin 71 is fixed in flange part 21a.
Directing pin 71 forms as one following member and constitutes: external screw thread 711; Columned axial region 712, it is formed at the top of external screw thread 711, and diameter is bigger than external screw thread 711; With discoid head 713, it is formed at the upper end of axial region 712, and diameter is bigger than axial region 712.Directing pin 71 is that iron etc. is metal.In this variation 6, the plastic separator on the outer peripheral face that is embedded in axial region 712 outward 72 is omitted.
When the external screw thread 711 with directing pin 71 was screwed into negative thread 22, the end face of the car body lower side of axial region 712 contacted the upper surface 211a of flange part 21a and stops.Therefore, the head 713 of directing pin 71 is pushed the upper surface of the flat part 61d of guide bracket 61 with predetermined pressing force.Therefore, therefore, upper bracket 21 is not installed on guide bracket 61 loosely, and the damage load of upper bracket 21 is set at predetermined load.
Form the area of guiding groove 63 and the contact surface of the axial region 712 of directing pin 71 bigger through flanging processing, so the surface pressure of guiding groove 63 and the contact surface of axial region 712 descends.In addition, not the punching press section to be made as with the contact surface of axial region 712 use, so become smooth with the contact surface of axial region 712.Therefore; Though omit plastic separator 72; But the guiding groove 63 that forms explanation in the 2nd embodiment and the variation 1～4 thereof is to guiding groove 67, and the absorptive character of the impact energy during secondary collision are stable, can set the absorption characteristic of impact load accurately.
At the grooving through taper 23 during, upper bracket 21 with the guide surface 241 of taper, at secondary collision easily from the above-mentioned structure that box part 24 breaks away from; If upper bracket 21 breaks away from from box part 24, the gap of overall width direction then appears between grooving 23 and guide surface 241.Therefore, upper bracket 21 tilts to the overall width direction with respect to the central axis of top Steering gear 42 easily, so it is bigger to use the effect of guiding groove and directing pin in the 2nd embodiment of the present invention and the variation 1～6 thereof.
In above-mentioned the 2nd embodiment and variation 1～6 thereof; Example for the steering hardware of the tilt telescopic formula of obliquity that applies the present invention to carry out Steering gear and telescopic location both sides' adjustment is illustrated, but also can apply the present invention to tilting steering hardware, telescopic steering hardware, can not adjust the steering hardware of obliquity and telescopic location.
In above-mentioned the 2nd embodiment and variation 1～6 thereof; Possesses guiding groove; It is fixed with the car body front side on lower tray; Be formed at the guide bracket that along bottom Steering gear extends to the car body rear side, the axial region of directing pin is directed to the damage mobile terminal of car body front side, the groove width of the car body front side of guiding groove forms widelyer than the groove width of car body rear side.
Therefore, the impact load when secondary collision is done the time spent with respect to the central axis of top Steering gear to the overall width direction obliquely, and the outer peripheral face of directing pin is pulled on the guiding groove.Directing pin is to the guiding groove side shifting of the groove width broad of car body front side, so can suppress the working load of damaging when moving beginning less.In addition, in damaging the way of moving, guiding groove has bigger gap with respect to the outer peripheral face of directing pin, so can suppress to damage the increase of the resistance when moving.Therefore, the absorptive character of the impact energy during secondary collision are stable, can set the absorption characteristic of impact load accurately.

Claims (12)

1. steering hardware possesses:
The bottom Steering gear, its car body front side can be fixed in car body;
The top Steering gear, it can be damaged to the car body front side and be embedded in said bottom Steering gear movably, and the steering shaft axle bearing that steering handwheel will be installed gets and can rotate;
Upper bracket, it can be installed on car body with the mode that can break away from, and the mode of said disengaging is that the predetermined impulsive force during through secondary collision breaks away to the car body front side with said top Steering gear;
Guide bracket, it is fixed in said bottom Steering gear with the car body front side, and Steering gear extends to the car body rear side along said bottom, is formed with when secondary collision the guiding groove of channeling conduct is moved in the damage of said top Steering gear; And
Directing pin is fixed in said upper bracket, and the outer peripheral face of its axial region can be moved with upper bracket by said guiding groove channeling conduct;
Said steering hardware is characterised in that:
Said guide bracket has and the discontiguous flat part of said upper bracket, forms said guiding groove at this flat part;
Said directing pin has the diameter head bigger than this axial region in the upper end of the axial region of this directing pin;
Said steering hardware possesses the configuration part, gap; It is when being fixed in said upper bracket with said directing pin; Contact with the upper surface of said upper bracket, and the length setting in the gap between the upper surface of the lower surface of said head and upper bracket is predetermined value.
2. steering hardware according to claim 1 is characterized in that:
Possess plastic separator, said separator is embedded in the axial region outer peripheral face of said directing pin outward, and the outer peripheral face of said separator contacts with said guiding groove and can damage mobile;
At the outer peripheral face of said separator, be formed with and contact with said guiding groove and can damage mobile cylindrical portion.
3. steering hardware according to claim 2 is characterized in that:
At the outer peripheral face of said separator, be formed with and contact with said guiding groove and can damage 2 planar portions that move and be parallel to each other.
4. steering hardware according to claim 2 is characterized in that:
Possess the upper end and the diameter flange part bigger that are formed at said separator than the outer peripheral face of separator.
5. steering hardware according to claim 4 is characterized in that:
The flange part of said separator forms discoid.
6. steering hardware according to claim 4 is characterized in that:
The flange part of said separator forms rectangular shape.
7. steering hardware according to claim 4 is characterized in that:
Possess protuberance, said protuberance is formed at the upper surface of said flange part highlightedly to the car body upper side, is pushed by the lower surface of said head and can plastic deformation.
8. steering hardware according to claim 7 is characterized in that:
The said protuberance of said flange part uses the area of section of cutting off out with the central axis plane orthogonal of said separator to diminish to the car body upper side.
9. according to any described steering hardware in the claim 1 to 8, it is characterized in that:
The groove width of the car body front side of said guiding groove forms widelyer than the groove width of square end behind the car body.
10. steering hardware according to claim 9 is characterized in that:
Through flanging processing, the periphery of the said guiding groove of said guide bracket is erected.
11. steering hardware according to claim 2 is characterized in that:
Configuration part, said gap is the step surface that is integrally formed at the axial region of said directing pin;
Said directing pin along the lower surface of the said head of central axis and the interval of said step surface, bigger than the length along central axis of said separator.
12. steering hardware according to claim 2 is characterized in that:
Configuration part, said gap is the axle sleeve of hollow cylindrical, and said axle sleeve is embedded in the axial region outer peripheral face of said directing pin outward, and said separator is embedded in the outer peripheral face of said axle sleeve outward;
The length along central axis of said axle sleeve is bigger than the length along central axis of said separator.
CN201280000216.7A 2011-03-18 2012-03-15 Steering device Active CN102811896B (en)

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EP2687422A1 (en) 2014-01-22
JP5545365B2 (en) 2014-07-09
US20120319388A1 (en) 2012-12-20
WO2012128171A1 (en) 2012-09-27
EP2687422B1 (en) 2016-08-24
US8540280B2 (en) 2013-09-24
EP2687422A4 (en) 2015-06-10
JP2014037231A (en) 2014-02-27
JP5614486B2 (en) 2014-10-29
CN102811896B (en) 2015-01-21
JPWO2012128171A1 (en) 2014-07-24

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